Difference between -| and |- in TikZ












9















Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question


















  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    yesterday
















9















Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question


















  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    yesterday














9












9








9


0






Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question














Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf




tikz-pgf






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked yesterday









subham sonisubham soni

4,51983184




4,51983184








  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    yesterday














  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    yesterday








1




1





tex.stackexchange.com/a/401429/121799

– marmot
yesterday





tex.stackexchange.com/a/401429/121799

– marmot
yesterday










3 Answers
3






active

oldest

votes


















17














Understand it as it looks like:





  • -| is "horizontal line → vertical line":



    documentclass[tikz]{standalone}
    
begin{document}
    
begin{tikzpicture}
    
draw (0,0) coordinate (1) node[below] {$(0,0)$};
    
draw (2,2) coordinate (2) node[above] {$(2,2)$};
    
draw (1) -| (2);
    
% -------------
    
draw (4,2) coordinate (x) node[above] {$(3,2)$};
    
draw (6,0) coordinate (y) node[below] {$(5,0)$};
    
draw (x) -| (y);
    
end{tikzpicture}
    
end{document}


    enter image description here



    Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




  • |- is "vertical line → horizontal line":



    documentclass[tikz]{standalone}
    
begin{document}
    
begin{tikzpicture}
    
draw (0,0) coordinate (1) node[below] {$(0,0)$};
    
draw (2,2) coordinate (2) node[above] {$(2,2)$};
    
draw (1) |- (2);
    
% -------------
    
draw (4,2) coordinate (x) node[above] {$(3,2)$};
    
draw (6,0) coordinate (y) node[below] {$(5,0)$};
    
draw (x) |- (y);
    
end{tikzpicture}
    
end{document}


    enter image description here



    Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




They are clearly very different.






share|improve this answer

































    13














    I'd like to add to JouleV's answer another use of -| and |-.



    Given two nodes, A and B:




    • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

    • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




    documentclass{article}
    
usepackage{amsmath}
    
usepackage{tikz}
    
usetikzlibrary{positioning}
    

    
begin{document}
    
begin{tikzpicture}
    
node[draw] (A) {A};
    
node[draw, above right =4cm of A] (B) {B};
    
node[draw] at (A |- B) {$x$ of A, $y$ of B};
    
node[draw] at (A -| B) {$x$ of B, $y$ of A};
    
end{tikzpicture}
    
end{document}


    enter image description here






    share|improve this answer





















    • 2





      You're welcome! I edited my answer to put x and y within $...$.

      – CarLaTeX
      20 hours ago



















    4














    PSTricks version for @CarLaTeX's explanation:





    • (A|-B) (TikZ) = (A|B) (PSTricks)


    • (A-|B) (TikZ) = (B|A) (PSTricks)






    share|improve this answer























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      3 Answers
      3






      active

      oldest

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      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      17














      Understand it as it looks like:





      • -| is "horizontal line → vertical line":



        documentclass[tikz]{standalone}
        
begin{document}
        
begin{tikzpicture}
        
draw (0,0) coordinate (1) node[below] {$(0,0)$};
        
draw (2,2) coordinate (2) node[above] {$(2,2)$};
        
draw (1) -| (2);
        
% -------------
        
draw (4,2) coordinate (x) node[above] {$(3,2)$};
        
draw (6,0) coordinate (y) node[below] {$(5,0)$};
        
draw (x) -| (y);
        
end{tikzpicture}
        
end{document}


        enter image description here



        Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




      • |- is "vertical line → horizontal line":



        documentclass[tikz]{standalone}
        
begin{document}
        
begin{tikzpicture}
        
draw (0,0) coordinate (1) node[below] {$(0,0)$};
        
draw (2,2) coordinate (2) node[above] {$(2,2)$};
        
draw (1) |- (2);
        
% -------------
        
draw (4,2) coordinate (x) node[above] {$(3,2)$};
        
draw (6,0) coordinate (y) node[below] {$(5,0)$};
        
draw (x) |- (y);
        
end{tikzpicture}
        
end{document}


        enter image description here



        Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




      They are clearly very different.






      share|improve this answer






























        17














        Understand it as it looks like:





        • -| is "horizontal line → vertical line":



          documentclass[tikz]{standalone}
          
begin{document}
          
begin{tikzpicture}
          
draw (0,0) coordinate (1) node[below] {$(0,0)$};
          
draw (2,2) coordinate (2) node[above] {$(2,2)$};
          
draw (1) -| (2);
          
% -------------
          
draw (4,2) coordinate (x) node[above] {$(3,2)$};
          
draw (6,0) coordinate (y) node[below] {$(5,0)$};
          
draw (x) -| (y);
          
end{tikzpicture}
          
end{document}


          enter image description here



          Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




        • |- is "vertical line → horizontal line":



          documentclass[tikz]{standalone}
          
begin{document}
          
begin{tikzpicture}
          
draw (0,0) coordinate (1) node[below] {$(0,0)$};
          
draw (2,2) coordinate (2) node[above] {$(2,2)$};
          
draw (1) |- (2);
          
% -------------
          
draw (4,2) coordinate (x) node[above] {$(3,2)$};
          
draw (6,0) coordinate (y) node[below] {$(5,0)$};
          
draw (x) |- (y);
          
end{tikzpicture}
          
end{document}


          enter image description here



          Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




        They are clearly very different.






        share|improve this answer




























          17












          17








          17







          Understand it as it looks like:





          • -| is "horizontal line → vertical line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) -| (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) -| (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




          • |- is "vertical line → horizontal line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) |- (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) |- (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




          They are clearly very different.






          share|improve this answer















          Understand it as it looks like:





          • -| is "horizontal line → vertical line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) -| (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) -| (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




          • |- is "vertical line → horizontal line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) |- (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) |- (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




          They are clearly very different.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 16 hours ago

























          answered yesterday









          JouleVJouleV

          7,89222053




          7,89222053























              13














              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer





















              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                20 hours ago
















              13














              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer





















              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                20 hours ago














              13












              13








              13







              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer















              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited 20 hours ago

























              answered yesterday









              CarLaTeXCarLaTeX

              34k551140




              34k551140








              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                20 hours ago














              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                20 hours ago








              2




              2





              You're welcome! I edited my answer to put x and y within $...$.

              – CarLaTeX
              20 hours ago





              You're welcome! I edited my answer to put x and y within $...$.

              – CarLaTeX
              20 hours ago











              4














              PSTricks version for @CarLaTeX's explanation:





              • (A|-B) (TikZ) = (A|B) (PSTricks)


              • (A-|B) (TikZ) = (B|A) (PSTricks)






              share|improve this answer




























                4














                PSTricks version for @CarLaTeX's explanation:





                • (A|-B) (TikZ) = (A|B) (PSTricks)


                • (A-|B) (TikZ) = (B|A) (PSTricks)






                share|improve this answer


























                  4












                  4








                  4







                  PSTricks version for @CarLaTeX's explanation:





                  • (A|-B) (TikZ) = (A|B) (PSTricks)


                  • (A-|B) (TikZ) = (B|A) (PSTricks)






                  share|improve this answer













                  PSTricks version for @CarLaTeX's explanation:





                  • (A|-B) (TikZ) = (A|B) (PSTricks)


                  • (A-|B) (TikZ) = (B|A) (PSTricks)







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered yesterday









                  The Inventor of GodThe Inventor of God

                  4,99611142




                  4,99611142






























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